There's a REAL lack of polish (blurry cards, ugly menus, terrible music), but the core card mechanics are as great as ever.

Plus, I've been saying for a while that Magic should take a page from this franchise and make a "block" of cards available in-game along with a deck editor. Deck building has always been the REAL meat of CCG's as far as I'm concerned, and the Yu-Gi-Oh games play into that aspect very well.